Malicious PDF — malware analysis report

Static analysis result for SHA-256 e453b3eae39af839…

MALICIOUS

PDF

83.4 KB Created: 2021-04-01 10:32:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 6b3943158074bd946300ad4ab55b5bfd SHA-1: 162e92a45687bf53c2f60a55065dd025cb3a8b69 SHA-256: e453b3eae39af8392889621550e8be4ce6b77b2d015f8c991ef4992954183529
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://soxebez.ru/strik?utm_term=winchester+gun+safe+12+gun+ts12-30+reviews PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4365607/normal_600413df8321e.pdfIn PDF document text
    • https://sezunugavekavo.weebly.com/uploads/1/3/5/3/135321765/dewusovarajenu-judotor.pdfIn PDF document text
    • http://garirixis.22web.org/flysky_fs-i6_2.4g_6ch_rc_transmitter.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378599/normal_6044d99e6df30.pdfIn PDF document text
    • https://pusesame.weebly.com/uploads/1/3/4/6/134662227/posoti.pdfIn PDF document text
    • https://puzomukasudugun.weebly.com/uploads/1/3/4/8/134865935/5259306.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485322/normal_6052397de5dfe.pdfIn PDF document text
    • http://jezonikiroka.mygamesonline.org/how_much_is_premier_protein_at_walmart.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/dibidHQ/r-_type_dimensions_pc_download.pdfIn PDF document text
    • https://cdn.sqhk.co/panafilaputu/pc0jchb/4329457864.pdfIn PDF document text
    • https://bolowotusupiwam.weebly.com/uploads/1/3/5/3/135300352/2072465.pdfIn PDF document text
    • http://pobumur.iblogger.org/segmented_income_statement_contribution_format.pdfIn PDF document text
    • http://wuxetij.mypressonline.com/basic_grammar_punctuation_rules.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://12f7643e-9106-4823-89c2-0bdaecd1bc22.filesusr.com/ugd/1f6d71_50f73acf0a11405983e8b28e7f7b2545.pdf?index=trueIn PDF document text
    • https://068ba8bc-08b0-4b68-8151-f3c59c7a5775.filesusr.com/ugd/5a4aad_c1764d99d9054b53a63ad19b5080ada0.pdf?index=trueIn PDF document text
    • http://vugixemavofagen.epizy.com/carlsberg_group_annual_report_2018.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001080a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1080A 5800 bytes
SHA-256: d242f2c7099d70185a3cc42592e77a6d8d813b0ae2668ca64ae9f2a5a8489ea5
font_01_sfnt_off00011bf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BF4 10612 bytes
SHA-256: 4236a80061369e38b8ba17a786e38cf19ae4e55ddaafb3641eff9911aa3c577c

Open this report in the interactive analyzer, or submit your own file for analysis.